/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/SimpleHoleFiller.h
Normals are shared among NewTriangles but not with the surrounding portions of the mesh.
false if there is an error, usually if VidsToUVsMap did not have an entry for a needed vertex ID.
bool UpdateAttributes ( [TArray](API\Runtime\Core\Containers\TArray)< [FMeshRegionBoundaryLoops::VidOverlayMap](API\Runtime\GeometryCore\FMeshRegionBoundaryLoops\VidOverlayMap)< FVector2f >> & VidUVMaps )